<template>
    <li>
        <label>
            <input type="checkbox" :checked="todo.done" @change="handleCheck(todo.id)"/>
            <span>{{todo.title}}</span>
        </label>
        <button class="btn btn-danger" @click="handleTodo(todo.id)">删除</button>
    </li>
</template>

<script>
    export default {
        name:'MyItem',
        // 声明接收todo对象
        props:['todo','checkTodo','delTodo'],
        methods:{
          // 勾选or取消勾选
          handleCheck(id){
            // 通知App组件将相应的todo对象的done值取反
            this.checkTodo(id)
          },
          handleTodo(id){
            if(confirm('确定删除吗？')){
              // 通知App删除对应的todo
              this.delTodo(id)
            }
          }
        },
    }
</script>

<style scoped>
  /*item*/
  li {
    list-style: none;
    height: 36px;
    line-height: 36px;
    padding: 0 5px;
    border-bottom: 1px solid #ddd;
  }
  li label {
    float: left;
    cursor: pointer;
  }
  li label li input {
    vertical-align: middle;
    margin-right: 6px;
    position: relative;
    top: -1px;
  }
  li button {
    float: right;
    display: none;
    margin-top: 3px;
  }
  li:before {
    content: initial;
  }
  li:last-child {
    border-bottom: none;
  }

  li:hover{
    background-color: #ddd;
  }
  li:hover button{
    display: block;
  }
</style>